We had an anxious couple of weeks ______ for the results of the experiment.
—Sally, do you mind if I take off my jacket? —Of course not. .
Not until he went through real hardship ________the love we have for our families is important.
Measures have been taken to fight ________recurring food safety problems, but there is still a long way to go before China can rid itself ________ these issues.
“Only two centimeters higher, _______break the world record,” encouraged the coach.
This nationwide smog should serve as a reminder to all, indicating a high time that we ______ on what we've done to the environment.